[Qgis-user] Path along a line

[Alexander Brazel]

I'll add my +1 to that; "Service area (from point)" and/or "Service area
(from layer)" are the tools you're looking for.

There is a pretty good step-by-step example available in the qgis
documentation at:
https://docs.qgis.org/3.22/en/docs/training_manual/vector_analysis/network_analysis.html#moderate-service-area-from-layer

PS: If you're comfortable using python and are looking for a quick way to
do some network analysis based on OSM data, I'd recommend checking out the
OSMnx package.
Some example notebooks can be found at
https://github.com/gboeing/osmnx-examples

Cheers,
Alexander Brazel
Consultant - (he/him) - biarrinetworks.com

On Monday, June 27, 2022 at 04:19:41 PM EDT, Thayer Young <thayeray at
yahoo.com> wrote:
>
>   Hi Krishna,
> Chris was correct about 'Service area (from point)' being the tool you
want. I think your problem is that the travel cost is measured in meters
not feet.
> I will add some detail to his answer. First you should set the 'Path type
to calculate' to shortest, and the 'travel cost' to be 304.8. It seems to
use meters as the distance cost unit. Also the output seems to be a little
wonky if the service areas overlap. You may want to select each point
manually and run the tool separately each time.
>
> -Thayer
>
>
>     On Monday, June 27, 2022 at 03:00:18 PM EDT, qgis-user-request at
lists.osgeo.org <qgis-user-request at lists.osgeo.org> wrote:
> Date: Mon, 27 Jun 2022 12:23:23 -0600
> From: krishna Ayyala <ayyalakrishna at gmail.com>
> To: chris hermansen <clhermansen at gmail.com>
> Cc: qgis-user <qgis-user at lists.osgeo.org>
> Subject: Re: [Qgis-user] Path along a line
> Message-ID:
>     <CADUrCAgx_PWoR88BCsWy=SoMHwPVGdZYVEnnDgNs5XX1MSi0Cg at mail.gmail.com
>
> Content-Type: text/plain; charset="utf-8"
>
> Chris,
> Thanks for the reply. This does not work. This is only creating a shortest
> path connecting all the 5 points. But,I am looking for a path of 1000ft
> from each of these points.
>
> Regards.
>
> On Mon, Jun 27, 2022 at 11:37 AM chris hermansen <clhermansen at gmail.com
>
> wrote:
>
>> Krishna and list
>>
>> On Mon, Jun 27, 2022 at 9:58 AM krishna Ayyala via Qgis-user <
>> qgis-user at lists.osgeo.org> wrote:
>>
>>> Hello,
>>> I  have a roads shapefile.  I also have a points shape file with 5
points
>>> which are on top of these roads. I wish to extract the roads that are
>>> 1000ft along the path from each of these points. I am not looking for
roads
>>> within 1000ft buffer. I am looking for roads along the path. Can anyone
>>> help me with this?
>>>
>>
>> Have you looked at Processing > Service area (from point)?  Seems to me
>> this might do the job for you.
>>
>>
>> --
>> Chris Hermansen ? clhermansen "at" gmail "dot" com
>>
>> C'est ma fa?on de parler.
>>
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